GB/T 20258.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20258.2-2019 | English | RFQ |
ASK
|
3 days [Need to translate]
|
Data dictionary for fundamental geographic information features -- Part 2: Scale of 1∶5 000 1∶10 000
| Valid |
GB/T 20258.2-2019
|
| GB/T 20258.2-2006 | English | RFQ |
ASK
|
3 days [Need to translate]
|
Data dictionary for fundamental geographic information features -- Part 2: Data dictionary for fundamental geographic information features of 1: 5000 1: 10000 scale
| Obsolete |
GB/T 20258.2-2006
|
PDF similar to GB/T 20258.2-2019
Basic data | Standard ID | GB/T 20258.2-2019 (GB/T20258.2-2019) | | Description (Translated English) | Data dictionary for fundamental geographic information features -- Part 2: Scale of 1��5 000 1��10 000 | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A75 | | Classification of International Standard | 07.040 | | Word Count Estimation | 466,461 | | Date of Issue | 2019-03-25 | | Date of Implementation | 2019-10-01 | | Older Standard (superseded by this standard) | GB/T 20258.2-2006 | | Quoted Standard | GB/T 13923; GB/T 20257.2 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the content structure of the 1:5000, 1:10000 basic geographic information element data dictionary and the description of the elements. This standard is applicable to the production, construction, update and maintenance of basic geographic information databases with a scale of 1 | GB/T 20258.2-2019: Data dictionary for fundamental geographic information features -- Part 2: Scale of 1∶5 000 1∶10 000
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Basic Geographic Information Elements Data Dictionary - Part 2. 1.5 000 1.10 000 scale)
ICS 07.040
A75
National Standards of People's Republic of China
Replace GB/T 20258.2-2006
Basic geographic information element data dictionary
Part 2. 1.5000 1.10000 scale
Part 2.Scaleof1.5000 1.10000
Published on.2019-03-25
2019-10-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 data dictionary structure and content 2
4.1 Structure 2
4.2 Element Name 2
4.3 Element Description 2
4.4 Feature Classification Code 2
4.5 Feature Attribute Table 3
4.6 Feature Geometry 4
4.7 means example 5
4.8 Element Relationship 5
5 element data dictionary content 8
6 element data dictionary expansion principle 8
Appendix A (Normative Appendix) 1.5000 1.10000 Basic Geographic Information Elements Data Dictionary Content 9
Feature Classification Code Index 449
Chinese index 455
Foreword
GB/T 20258 "Basic Geographic Information Element Data Dictionary" is divided into four parts.
--- Part 1. 1.500 1.1000 1.2000 scale;
--- Part 2. 1.5000 1.10000 scale;
--- Part 3. 1.25000 1.50000 1.100000 scale;
--- Part 4. 1.250000 1.500000 1.1000000 scale.
This part is the second part of GB/T 20258.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 20258.2-2006 "Basic Geographic Information Elements Data Dictionary Part 2. 1.5000 1.10000
Basic Geographic Information Element Data Dictionary.
Compared with GB/T 20258.2-2006, the main technical changes in this part are as follows.
--- Added the expression "relationship description" (see 4.8.2);
---All elements have added the "data source and data update date" attribute item, the feature geometry indicates that the attribute column in the table increases the data source
And update date;
--- The definition of the direction attribute item in the element attribute table is changed from the original "angle with the east direction (°)" to "the counterclockwise direction with the east direction"
Angle of formation (°)";
--- Added Chapter 6 element data dictionary expansion principle;
--- Added 20 elements. tower, tailings pond, construction area, open warehouse (material field), dedicated oxygen supply point, fitness and entertainment facilities, sun Buddha
Platform, windbreak wall, village road, railway observation deck, service area, wildlife passage, heat spreader, helipad, territorial sea baseline, territorial waters
The base point, the special administrative area boundary, the wind-proof sand-fixing stone square, the wind-proof sand-fixing grass square, and the bare land have expanded their classification codes, definitions,
Attribute items and corresponding table contents;
--- Change the data type and value range of all feature data sources from "character type 10" to "character type 60";
---Modified Changzhou River-ground river, Changnian River-disappearing river section, seasonal river, canal, higher than ground canal, higher than ground branch channel, etc.
Geometry and representation of the prime;
--- Modified the description of hydrological stations, subways, expressways, special elevation points, islands, coastlines, churches, railway stations and other elements.
This part is proposed by the Ministry of Natural Resources of the People's Republic of China
This part is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230).
This section drafted by. National Surveying and Mapping Geographic Information Bureau Surveying and Mapping Standardization Institute, Wuhan University.
The main drafters of this section. Duan Yihong, Lu Yuxia, Huang Wei, Liu Xiaoqiang, Zhang Ying, Wang Xiaohua, Wu Tong, Liu Haiyan, He Chaoying, Ying Shen,
Meng Junjun.
The previous versions of the standards replaced by this section are.
---GB/T 20258.2-2006.
Basic geographic information element data dictionary
Part 2. 1.5000 1.10000 scale
1 Scope
This part of GB/T 20258 specifies the content structure and elements of the 1.5000, 1.10000 basic geographic information element data dictionary.
description of.
This section applies to the production, construction, renewal and maintenance of the 1.5000, 1.10000 scale basic geographic information database.
The analysis and application of the basic geographic information data of 1.5000 and 1.10000 scale can be referred to and executed.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 13923 basic geographic information element classification and code
GB/T 20257.2 National Basic Scale Map Drawing Part 2. 1.5000 1.10000 Topographic Map
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Entity entity
A phenomenon in the real world.
Note. Entities cannot be subdivided into the same type of phenomenon.
3.2
Feature
The abstraction of real world phenomena.
Note. An element can appear as a type (such as a lake) or as an instance (such as Dongting Lake).
[GB/T 17694-2009, definition B.179]
3.3
Feature attribute featureattribute
The characteristics of the feature.
Note 1. A feature attribute may appear as a type or an instance. When there is only one meaning, either use the feature attribute type or use the feature
Attribute instance.
Note 2. A feature attribute should have a name, a data type, and a range of values associated with it. The feature attribute of a feature instance should have a genus obtained from the value range
Sex value.
[GB/T 17694-2009, definition B.181]
3.4
Attribute value attributevalue
Give a property-specific value.
|